Draft rigging



D. S. BARROWS.

DRAFT RIGGING.

APPLICATION FILED AUG.24. 1920.

Patented 0015.. W, 11922.,

2 SHEETS-SHEET I.

n. s. BARROWS.

DRAFT RIGGING. APPLICATION FILED AUG.24. 1920.

Patented. Oct; m, 1922..

2 SHEETS-SHEET 2.'

Hu l

M/nass portions thereof so means whereby man a oa; to, ram

W YORK, N. 122,

ASSIGNUR TO THE T. H. SYMINGTON A CORPORATION 01F DELAWARE.

DRAFT RIGG-ING.

application filed August 24, 1920. Serial No.

To all whom it may concern:

Be it known that l, DONALD S. Barrows, a citizen 'of the United States, residing at ochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Draft Rigging; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to railway cars, and more mechanism for operatively connecting the coupler to the yoke member, and the principal object of the invention is to provide the coupler may have a with respect to the yoke member without placing unequal strains on the yoke member and without detriment to the cushioning mechanism associated with said yoke. lln other words, I provide means whereby draft strains are transmitted equally from the key to both adjacent portions of the yoke member, and so construct the coupler stem as to center the butting load upon the cushioning mechanism irrespective of the position of the coupler with relation to the center line of the car.

To this end the principal object of my invention, generally stated, is to provide a key connected coupler shank and to form the coupler shank in a plurality of parts, and to so connect the portions thereof that they may have relative rotation with respect to each other and at the same time to prevent relative translation of one member with respect to the other.

nother object of the invention is to prode a two-part coupler shank having the connected as to permit the coupler to have the necessary or desired pivotal movement with respect to the yoke member and at the same time to provide means whereby the strain transmitted to the coupler is transmitted e ually to the yoke member irrespective of t e position ,of the said coupler. A

To these and other ends the invention cons'ists in various elements and combinations of elements hereinafter set forth, the novelfeatures being pointed out in the claims at the end of the specification.

eferring now to. the drawings, wherein T particularly to radial movement draft rigging for ably comprises a have illustrated two embodiments of the invention, a

Figure 1 is a top plan view, partially in horizontal section, illustrating the coupler and tion.

Figure 2 is a side elevation of the coupler shank or stem illustrated in Fig. 1, the coupler connecting key being shown in section. I

Figure 3 is a vertical longitudinal central section of the coupler stem illustrated in the preceding figures.

Figure a is a view, partially in plan and partially in section, of a coupler stem difi'er- Jifing in minor details from that shown in Figure 5 is a view, partially in side elevation and partially in longitudinal central section, of the structure shownin Fig. 4:.

Figure 6 is a View, half in end elevation yoke connection embodying my invenand half in transverse section, of the struc-' tureshown in Figs. 4 and 5.

Throughout the specification and drawings like parts are designated by like reference characters.

Referring first to Figs. 1 to 3, inclusive, the yoke or coupler connecting means, which may be of any of the well known forms, is designated by the reference numeral 1, and the coupler shank 2 is connected to the said yoke l by means of a transversely extending key 3. The coupler shank or stem preferplurality of members or see- 5, the outer member 4: being preferably formed integral with the coupler head (not shown), while the inner member 5 forms the'draf the said stem 2.

llt is obvious to those skilled in the art that the. buffing loads or blows received by the coupler vastly exceed the draft strains to which the coupler is subjected, and I therefore provide a form the sections of the coupler stem which will permit the transmission of the butting loads from the 'coupler to nism without detriment to the portions or sections of the couplerstem, and provide an entirely different form of connection between the portions of the stem under draft strains. The portion or member 4 of the coupler stem is preferably provided with a plurality of rearwardly extending arms or tions 4: and

t gear engaging portion of g of connection between the cushioning mechalips 6, the end portions'of which are curved or rounded so as to provide bearingfaces 7 and at'the juncture of the lips or arms 6 with the section 4 I preferably provide a plurality of upright webs8 the inner faces of which are curved or'rounded and are concentric with the faces 7 at the rearwardends of the arms 6. The portion 5 of the stem I may for 10 convenience be described as a swivel block. This block is provided with a plurality of slots or recesses 0 each adapted to receive one of the arms or lips 6. The intermediate portion '10 of the member-5 is' also provided with a slot 11 the purpose and object of scribed. Y

As clearly shown in Fig. 1, the ends of the portions 12 of the member 5, as well as the end of the intermediate portion 10, are curved or rounded so as to cooperate with the curved faces of the flanges 8, and likewise the bottom or ends of the recesses 9 are curved or rounded so as to cooperate with Y the curved or rounded faces 7 of the arms 6. 'To operatively connect the intercalated members 4 and 5, I may provide an upright pivot pin 13 which is adapted to extend through the portions 12, through the arms 6, and through the intermediate portion 10 of the said member 5. The curved faces hereinbefore referred to are of course concentric with the pin 13.

The slot 11 heretofore mentioned extends rearwardly of the forward edge of the pivot pin or pintle 13, and the member 4 is provided with a cooperating slot 14. which extends forwardly lntermediate the inwardly extending portions of the flanges 8. This slot, which may be partially formed in both of the said members 4 and 5 as shown, is adapted to receive the coupler connecting key 3 hereinbefore referred to, and in order to position the said key at the requisite distance from the rear face of the member '5, I conveniently notch the pin 13, as at 15. This interengagement between the transversely extending key 3 and the serves a double purpose. y so arranging the mechanism 1 provide means for preventing rotation of the pivot pin 13, and I also provide a safety mechanism which will prevent the accidental loss of thepin 13 and the consequent damage to the equipment. It might be noted that the pin openings in the portions 12 of the member 5 are slightly countersunk so as to receive the head 16 of the said key and to permit of the expansion of the periphery of the' said key adjacent its lower end, as clearly shown at 17 in Fig. 3. It is also to be observed that the slot 14 in the member 4 extends forwardly of the forward edge of thecoupler key 3 and hence the coupler head may move radially on the pin 13 as a center without causing a deflection or angling of the coupler key 3. The side walls which will hereinafter be de-- ugright pintle 13 18 of the member 5 of the shank may be provided with enlargements 19 suitably braced by ribs or flanges 20 to afford additional bearing area for the side of the key under draft strains.

Under-bufling loads it will be obvious that the curved bearing faces on the two portions of the coupler shank 2 will engage, and that an adequate cross sectional area of metal will be provided between the two so as to transmit the bufling loads directly to the cushioning mechanism which is positioned in rear of and in contact with the rear face of the portion 5. Under pulling strains the oad upon the coupler is transmitted from the ears or arms 6 to the pivot pin 13 and from the latter to the member 5, and from this member to the key 3 and thence to the yoke 1. It will be observed, however, that under pulling strains the pin 13 is placed under quadruple shear, and since the pin 13 is suitably braced throughout its entire length all danger of distortion is'avoided and suflicient metal is provided to withstand all of the strains incident to draft.

In Figs. 1 to 6, inclusive, the arrangement of the parts is substantially the same. The. principal difference between the structures shown in Figs. 1 to 3 and in Figs. 4: to 6. inclusive, is in the increase in size of the curved faces 7 and 8, and in the location of the pivot pin 13. It is also to be observed that in the second form of my device I have materially increased the bearing area of the portion 5 of the stem 2 where the same is adapted to contact the cushioning mechanism.

Having now described my invention, what I claim and desire to secure by Letters Patent is 1. A coupler stemcomprising a plurality .of pivotally connected members and provided with a key slot formed in part in each of the said members.

2. A coupler stem comprising intermeshing pivotally connected members and provided with a transversely extending coupler kev receiving slots, the latter being formed ll] part in each of said members.

3. A coupler stem comprising intermeslr ingmembers, an upright key passing through said members and pivotally connecting the members, and a key slot formed in said stem and intersecting portions of the said pin.

4. A coupler stem comprising a pair of sections, said sections having intcrcalated portions, and a pin extending through said portions and adapted to pivotally connect said sections, said stem being provided with a key receiving slot extending through adjacent portions of the said sections. 7

5. In a draft rigging, the combination with a yoke member, of a two-part coupler stem, means for connecting the parts of the coupler stem, and a key extending through to said yoke both of said parts for connecting said stem member.

6. In a draft rigging, the combination with a yoke member, of a coupler stem com prising a plurality of relatively rotatable members, and transversely extending means for connecting' one of said members to the said yoke member, said vmeans being adapted to be received in slots partially formed in each of said rotatable members.

7. A coupler stem comprising amember having a bifurcated end and a slotted member adapted to cooperate therewith, means for pivotally connecting said members, and means formed on one of the said members, said last named means being adapted to engage a transversely extending coupler con: necting key. 4

8:111 a draftv rigging, the combination with a yoke member, of a two-part coupler stem having the portions thereof pivotally connected at a point intermediate the ends of said yokemember, means formed on one of said members for engaging a movable element of the draft rigging under movement in one direction, and separate means carried by said member for engaging another movable element of the draft rigging upon movement in the opposite direction.

9. in a draft rigging, the combination with a yoke member, of acoupler stem. comprising a plurality of pivotally connected members, a transversely errtending key adapted to connect one of said members to the said yoke, and a vertically arranged pin intersecting said key and adapted to connect the other member to said first named memher, said pin forming a pivotal connection between the said members.

10. in a draft rigging, the combination with a yoke member, of a coupler stem comprising a plurality of members, means for connecting one of said members to the said yoke, and separate means for pivotally connecting the said members, at a point intermediate the ends of said yoke. 11. In a draft rigging, the combination with a horizontally arranged yoke member, of a coupler stem comprising a plurality of relatively rotatable members, a transversely extending key for movably connecting one of said rotatable members to said yoke member, and means cooperating with'said last named rotatable member for maintaining draft and buffing forces normal to the center line of said draft rigging.

v12. Acoupler stem for railway draft rigging comprising inter-meshing members, a pin forj plvotally connecting said members, and means comprising a key extending transversely of said pin for retaining said pin in position. 13, A coupler stem for railway draft ging comprising intermeshing members pivotally connected by a vertically arranged pin, and a horizontally arranged key intersecting said pin, said horizontal key being adapted to limit the movement of the said members. I

let. in a draft rigging, with a yoke member, of a coupler stem connprising intermeshing members, means for pivotally connecting said intermeshing mem bers intermediate the ends of said yoke, and means for connecting one or said members to the said yoke, the said means for connecting the intermeshing members being arranged in one plane and the said means for connecting the members to the said yoke being ar ranged in a plane at right angles thereto.

Intestimony whereof I atiia my si eture.

DONALD S. BARR rigthe combination 

